Shipment blocking means



pl'il 30, 1935- L. E. WENHAM 1,999,852

SHIPMENT BLOCKING MEANS I v FiledApril 1o, 1954 a f E 1 'Y lllanllumnw llmum "l" Inventor: l Lancelot E. Wenham.

:H @MZM bij H M1-torn ergn Patented Apr. 30, 1935 y y u Y UN ITED 'STATES' PATENT OIF FICE fiiaiiassa y SHIPMENT Locarno mails Lanci-.let Wepha'm, vriassfielel..lima., assigner to Gelieral'Electc Company, a corporation of NewYork .-ij' Y Y Application April 1o, 1934fsm Banaan v r 4claims. (crus- 336) My invention relates to shipment blocking April 10, 1934, in the name of F. J. Champlin, both means and more particularly to a novel construcof said applications being assigned to the assignee tion for preventing motion of the normally movof the present application. able elements of a contact making voltmeter dur- The contact beam I is also provided with an 5 ing shipment of the meter. y armature member 1 which is adapted in operation 5 Contact making voltmeters and other similar to be attracted by enclosed holding magnets 8 in devices having relatively delicate movable parts a Well known manner. are likely to have these parts injured and the Supporting means 2 for the solenoid is provided calibration of the meter disturbed due to vibrawith brackets or lugs 9 and l0 having holes there- 10 tion and rough handling of the meter during its in, and a hole is provided in the core member 3, 10 shipment from the manufacturer to the pur-k these holes all being so placed that when the core chaser. member 3 is in a position in which no undue strain In accordance with my invention, I provide a is placed on the movable elements associated with novel and extremely simple shipment blocking the contact beam 4, all three of these holes will parts during its shipment. This arrangementr threaded and one or both of the other holes is consists essentially of a shipment blocking screw threaded. As shown, the hole in the backbracket which is threaded into the core of the operating I0 is threaded, but if desired, the hole in bracket S solenoid of the meter and into a stationary elemay alsobe threaded, or the hole invmember 9 ment associated with the meter, thereby eifecmay be threaded and the hole in member IIJ 20 tively blocking motion of the core in any direcmay notbe threaded. tion. Adapted to be passed through the holes when An'object of my invention is to provide anovel they are in alignment is a shipment blocking shipment blocking arrangement. q screw Il. l

A further object of my invention is to provide When it is desired to ship the meter, the screw 25 a novel and simple means for preventing move- Il is passed through all three holes and due to ment of the normally movable elements of a the fact that it is in threaded engagement with contact making voltmeter during its shipment. the hole in core 3 and also is threaded to one of My invention willbe better understood from the the fixed members attached to the enclosing following description taken in connection with the means for the solenoid, the core 3 is effectively 30 accompanying drawing and its scope will be blocked vfrom motion in any direction. Thus, the pointed out in the appended claims. threads vprevent it from moving axially along the In the drawing, Fig. 1 is a perspective view of screw, while the screw prevents vertical motion the upper portion of a contact making voltmeter of the core or motion in any radial direction.

to which my invention is applied, and Fig. 2 Consequently, the parts are prevented from dam- 35 is a part longitudinal sectional view along the aging themselves during shipment and the meter blocking screw and showing the details of conmay be 'accurately adjusted at the factory so that struction of my invention. n when it is ready to be installed allthat is neces- Referring now to Fig. 1, there is shown a'consary is that the screw Il be removed, and thev 40 tact making voltmeter comprising a base memmeter will be ready to go into service. Duringf40 ber, or plate, I, to which is fastened in any suitnormal operation of the meter, of course, the

` able manner an enclosed operating solenoid magscrew i I is removed.

net 2. 'I'he solenoid magnet is provided with a WhileI have shown and described a particular core member 3 which is attached in any suitable embodiment of my invention, it will be obvious manner to a pivotally mounted contact beam 4 to those skilled in the art that changes and 45 which is mounted in delicate bearings and which modiiications may be made without departing carries movable contacts 5 for cooperation with from my invention, and I, therefore, aim in the stationary contacts 6. My invention is not conappended claims to cover all such changes andk cerned with the various structural details of the modifications as fall within the true spirit and contact beam mounting, or the stationary con-y scope of my invention. l 50 tact mounting, of the meter shown in Fig. 1, and What I claim as new and desire to secure by these details are shown in more detail and are Letters Patent oi' the United States is:

claimed, respectively, in application Serial No. 1. In a contact making voltmeter, in combina- 719,901, filed April l0, 1934, in the name of G. H. tion, an operating solenoid magnet, supporting Fagley, and application Serial No. 719,898, tiled means therefor,` a core therein, and means for 55 arrangement for preventing injury of the meter be in alignment. The hole in the core 3 is 15 blocking said core against movement relative to said magnet during shipment of the meter comprising a screw threaded into aligned holes in both said core and said supporting means.

2. In a contact making voltmeter, in combination, an operating solenoid magnet, a relatively movable core therein, means which is relatively immovable with respect to said magnet having a threaded hole therein whose axis passes through said core and a threaded hole in said core which may be aligned with the hole in said means whereby a shipment blocking screw may be threaded through said holes thereby to block relative motion between said core and magnet in any direction.

3. In a contact making voltmeter, in combination, an operating magnet, a movable solenoid core therein, a screw threaded hole in said core,

and stationary means having aligned holes on opposite sides of the hole in said core, one of the holes in said means also being threaded whereby if a shipment blocking screw is passed through al1 of said holes so as to have its threads engage the threads of said holes said core will be blocked from motion in any direction.

4. In a contact making voltmeter, in combination, an operating solenoid magnet having a core therein, an enclosing and supporting casting for said magnet, brackets on said casting on each side of said core, aligned holes in said bracket and said core, the hole in said core and one of said other holes being threaded, and a screw adapted to be passed through all of said holes and having threads for engaging the threads of said threaded holes.

LANCELOT E. WENHAM. 

